Miniaturized fuse anti-miscontact mounting device

Abstract

The utility model discloses a miniaturized fuse anti -touching by mistake installation device belongs to fuse anti -touching by mistake installation device technical field. Including base and top cover, the outside of base is provided with top cover, the surface of base, top cover is provided with the multiple groups through -hole of equal interval, the inside symmetry of top cover is installed elastic C -shaped sheet, the bottom of elastic C -shaped sheet all is installed with upper elastic buckle, the bottom of top cover is installed four groups of support column, the inside installation of base has the support plate. The utility model not only realized that fuse anti -touching by mistake installation device convenient to the fuse is limited to support to evade the risk of touching by mistake to a certain extent, has improved the convenience of fuse anti -touching by mistake installation device to the fuse is limited to support, and realized that fuse anti -touching by mistake installation device convenient to the fuse is replaced, is convenient for operating in crowded space, has improved the convenience of fuse anti -touching by mistake installation device replacement fuse.

Description

Technical Field

[0001] This utility model relates to the technical field of fuse anti-accidental activation installation devices, specifically a miniaturized fuse anti-accidental activation installation device. Background Technology

[0002] A fuse is a circuit protection component. When the current abnormally rises to a certain value, the fusible element inside it will melt and break the circuit, thus providing safety protection. A miniaturized fuse anti-accidental contact mounting device is a compact and small-sized mechanical structure or accessory specifically designed for installing and fixing small fuses (such as surface mount fuses and miniature fuses), and can effectively prevent fingers or tools from accidentally contacting its live metal terminals, thereby improving safety.

[0003] On a circuit board (PCB), the two ends of a fuse are directly connected to the circuit and are usually energized. If a person's finger or a metal tool (such as a screwdriver) accidentally touches both electrodes of the fuse at the same time, it may cause a short circuit or electric shock. This risk is especially fatal in high-voltage applications. Modern electronic devices (such as mobile phones, laptops, smart wearable devices, communication modules, etc.) are increasingly pursuing thinness and miniaturization, and the components used inside them, including fuses, are also trending towards miniaturization (such as 0402, 0201, or even smaller surface mount fuses). Traditional fuse holders are too bulky to be used.

[0004] Existing fuse anti-accidental activation installation devices of this type generally do not facilitate convenient fuse limiting and support during use. While this mitigates the risk of accidental activation to some extent, it also affects the ease of fuse limiting and support, hinders convenient fuse replacement, and makes operation in confined spaces inconvenient, thus impacting the convenience of fuse replacement. Utility Model Content

[0005] The purpose of this utility model is to provide a miniaturized fuse anti-accidental activation installation device to solve the problems mentioned in the background art, such as the inconvenience of the fuse anti-accidental activation installation device in limiting and supporting the fuse to a certain extent, which avoids the risk of accidental activation, affects the convenience of limiting and supporting the fuse, makes it inconvenient to replace the fuse, and is not convenient to operate in a confined space, thus affecting the convenience of replacing the fuse.

[0006] To solve the above-mentioned technical problems, this utility model provides the following technical solution:

[0007] A miniaturized fuse anti-accidental activation installation device includes a base and a top cover. The top cover is disposed on the outside of the base. Multiple sets of through holes with equal spacing are provided on the surfaces of both the base and the top cover. Elastic C-shaped pieces are symmetrically installed inside the top cover. Each elastic C-shaped piece has an upper elastic buckle at its bottom end. Four sets of support columns are installed at the bottom of the top cover. A support plate is installed inside the base. Four sets of circular grooves are provided at the top of the base. Four sets of support frames are installed on the side walls of the base. A U-shaped frame is installed at the top of the support plate. Connecting plates are symmetrically installed on the top sidewall of the support plate. Wire plates are installed on the sidewalls of the connecting plates. Each wire plate has a lower elastic buckle at its top. A first clamping arm is provided on the outside of the U-shaped frame. A second clamping arm is provided on the outside of the first clamping arm. A fuse body is placed between the first and second clamping arms. Torque springs are symmetrically installed on the sidewall of the U-shaped frame. A first rocker arm is installed on the side of one set of torsion springs away from the U-shaped frame, and a second rocker arm is installed on the side of the other set of torsion springs away from the U-shaped frame.

[0008] Optionally, a support shaft is movably mounted on the top end of the first rocker arm, and a rotating shaft is movably mounted on the top end of the second rocker arm. Both the support shaft and the rotating shaft extend through the U-shaped frame to its outside. A first shaft is movably mounted on the side wall of the U-shaped frame above the torsion spring, and a second shaft is movably mounted on the side wall of the U-shaped frame near the first shaft. Both the first shaft and the second shaft extend through the U-shaped frame to its outside. A first connecting arm is symmetrically arranged on the outside of the first clamping arm, and a second connecting arm is symmetrically arranged on the outside of the second clamping arm.

[0009] Optionally, all second connecting arms are movably connected to the second shaft, all first shafts are movably connected to the first connecting arm, a third shaft is movably mounted on the end of the second connecting arm away from the second shaft, a fourth shaft is movably mounted on the side of the first connecting arm away from the first shaft, the second connecting arm is movably connected to the second clamping arm through the third shaft, and the first connecting arm is movably connected to the first clamping arm through the fourth shaft.

[0010] Optionally, a first support arm is movably mounted on the side of the U-shaped frame away from the torsion spring, and a second support arm is movably mounted on the side wall of the U-shaped frame away from the first support arm.

[0011] Optionally, the first support arm is movably connected to the first clamping arm via a support shaft, and the second support arm is movably connected to the second clamping arm via a rotation shaft.

[0012] Optionally, each of the support frames has a telescopic column movably installed inside, the telescopic column extends through the support frame to the outside, and a pull ring is movably installed at one end of each telescopic column.

[0013] Optionally, a top block is installed at the other end of each telescopic column, and the top block extends into the interior of the base and is movably connected thereto.

[0014] Optionally, each of the telescopic columns is fitted with a first spring, and one end of each first spring is connected to the support frame.

[0015] Optionally, the other end of each of the first springs is connected to the top block, and each of the support columns extends into the interior of the base through a circular groove.

[0016] Optionally, the surface of each support column is provided with an annular groove, and each top block mates with the annular groove.

[0017] Compared with the prior art, the beneficial effects of this utility model are: the fuse anti-accidental contact installation device not only realizes the convenient limiting support of the fuse to a certain extent, thus avoiding the risk of accidental contact and improving the convenience of limiting support of the fuse, but also realizes the convenient replacement of the fuse, which is convenient for operation in confined spaces and improves the convenience of replacing the fuse.

[0018] Pulling the first and second clamping arms in opposite directions causes the first clamping arm to rotate around the first axis via a fourth shaft, and the second clamping arm to rotate around the second axis via a third shaft. Simultaneously, the first clamping arm rotates the first rocker arm and a set of torsion springs via a support shaft, and the second clamping arm rotates the second rocker arm and another set of torsion springs via a rotating shaft. Under the elastic support of the torsion springs and the support of the U-shaped frame, one set of torsion springs exerts a reverse thrust on the first rocker arm, and the other set of torsion springs exerts a reverse thrust on the second rocker arm. The first and second support arms serve as auxiliary limiting supports. The fuse body is placed between the first and second clamping arms, with its two ends connected to... Two sets of lower elastic buckles contact each other, releasing the first and second clamping arms. Under the elastic support of the torsion spring, the first and second clamping arms clamp and limit the fuse body. The fuse is then connected to external electrical components via a lead plate. The top cover is secured to the surface of the base. Under the elastic support of two sets of elastic C-shaped plates, the two sets of upper elastic buckles inside the top cover contact the surface of the fuse body, limiting its position. This mitigates the risk of accidental activation to some extent, enabling the fuse anti-accidental activation installation device to conveniently limit and support the fuse, preventing fuse misalignment and improving the convenience of limiting and supporting the fuse.

[0019] Manually pull the four sets of pull rings in sequence. The pull rings drive the telescopic columns, the first spring, and the top block to move outward, causing the top block to disengage from the annular groove. Remove the top cover, release the pull rings, and under the elastic support of the first spring, the first spring drives the top block to return to its original position, allowing the fuse inside the base to be replaced. After replacement, lock the top cover onto the surface of the base. The four sets of support columns, through the circular groove, cooperate with the top block inside the base to limit the movement. This enables convenient fuse replacement using the fuse anti-accidental activation installation device, reducing the risk of accidental activation, facilitating operation in confined spaces, and improving the convenience of fuse replacement. Attached Figure Description

[0020] The accompanying drawings, which are incorporated herein and form part of the specification, illustrate embodiments of the present invention and, together with the specification, further serve to explain the principles of the present invention and enable those skilled in the art to implement and use the present invention.

[0021] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0022] Figure 2 This is a front view structural diagram of the present utility model;

[0023] Figure 3 This is a three-dimensional structural diagram of the top cover of this utility model;

[0024] Figure 4 This is a three-dimensional structural diagram of the base of this utility model;

[0025] Figure 5 This is a three-dimensional structural diagram of the U-shaped frame of this utility model;

[0026] Figure 6 This is a three-dimensional structural diagram of the first support arm of this utility model;

[0027] Figure 7 This is a three-dimensional structural diagram of the first rocker arm of this utility model;

[0028] Figure 8 This is a three-dimensional structural diagram of the support frame of this utility model;

[0029] Figure 9 This is a side view sectional structural diagram of the base of this utility model.

[0030] Figure label:

[0031] 1. Base; 2. Top cover; 3. Through hole; 4. Elastic C-shaped piece; 5. Upper elastic buckle; 6. Support column; 7. Support plate; 8. Circular groove; 9. Support frame; 10. U-shaped frame; 11. Connecting plate; 12. Wire plate; 13. Lower elastic buckle; 14. Fuse body; 15. Torsion spring; 16. First rocker arm; 17. Second rocker arm; 18. Support shaft; 19. Rotating shaft; 20. First clamping arm; 21. Second clamping arm; 22. First connecting arm; 23. Second connecting arm; 24. First shaft; 25. Second shaft; 26. Third shaft; 27. Fourth shaft; 28. First support arm; 29. ​​Second support arm; 30. Telescopic column; 31. First spring; 32. Top block; 33. Pull ring; 34. Annular groove.

[0032] As shown in the figure, specific structures and devices are marked in the figure to clearly illustrate the structure of the embodiment of this utility model. However, this is only for illustrative purposes and is not intended to limit this utility model to this specific structure, device and environment. Those skilled in the art can adjust or modify these devices and environments according to specific needs. Detailed Implementation

[0033] The present invention provides a miniaturized fuse anti-accidental activation installation device with reference to the accompanying drawings and specific embodiments. It should be noted that, to make the embodiments more detailed, the following embodiments are the best and preferred embodiments; those skilled in the art can also use other alternative methods to implement some known technologies; and the accompanying drawings are only for more specific description of the embodiments and are not intended to specifically limit the present invention.

[0034] It should be noted that the use of terms such as "an embodiment," "an embodiment," "an exemplary embodiment," and "some embodiments" in the specification indicates that the described embodiment may include a specific feature, structure, or characteristic, but not every embodiment necessarily includes that specific feature, structure, or characteristic. Furthermore, when a specific feature, structure, or characteristic is described in connection with an embodiment, implementing such a feature, structure, or characteristic in conjunction with other embodiments (whether explicitly described or not) should be within the knowledge of those skilled in the art.

[0035] Generally, terms can be understood at least partly from their use in context. For example, depending at least partly on the context, the term "one or more" as used herein can be used to describe any feature, structure, or characteristic in a singular sense, or a combination of features, structures, or characteristics in a plural sense. Additionally, the term "based on" can be understood not necessarily to convey an exclusive set of factors, but rather, alternatively, depending at least partly on the context, to allow for the presence of other factors that are not necessarily explicitly described.

[0036] It is understood that the meanings of “on”, “above”, and “above” in this utility model should be interpreted in the broadest manner, such that “on” not only means “directly on” something, but also includes the meaning of being “on” something with an intervening feature or layer, and that “above” or “above” not only means “on” something, but also includes the meaning of being “on” something without an intervening feature or layer.

[0037] Furthermore, spatially related terms such as “below,” “under,” “lower,” “above,” and “upper” are used herein for convenience to describe the relationship of one element or feature to one or more other elements or features, as illustrated in the accompanying drawings. Spatially related terms are intended to cover different orientations in the use or operation of the device other than those depicted in the accompanying drawings. The device may be oriented in other ways, and the spatially related descriptive terms used herein can be interpreted similarly.

[0038] like Figures 1 to 9As shown, an embodiment of this utility model provides a miniaturized fuse anti-accidental activation installation device, including a base 1 and a top cover 2. The top cover 2 is provided on the outside of the base 1. The surfaces of the base 1 and the top cover 2 are provided with multiple sets of through holes 3 at equal intervals. Elastic C-shaped pieces 4 are symmetrically installed inside the top cover 2. The bottom end of each elastic C-shaped piece 4 is provided with an upper elastic buckle 5. Four sets of support columns 6 are installed at the bottom end of the top cover 2. A support plate 7 is installed inside the base 1. The top of the base 1 is provided with four sets of circular grooves 8. Four sets of support frames 9 are installed on the side wall of the base 1. The top of the support plate 7... A U-shaped frame 10 is installed at the end. Connecting plates 11 are symmetrically installed on the top side wall of the support plate 7. Wire plates 12 are installed on the side walls of each connecting plate 11. A lower elastic buckle 13 is installed at the top of each wire plate 12. A first clamping arm 20 is provided on the outside of the U-shaped frame 10. A second clamping arm 21 is provided on the outside of the first clamping arm 20. A fuse body 14 is placed between the first clamping arm 20 and the second clamping arm 21. Torsion springs 15 are symmetrically installed on the side wall of the U-shaped frame 10. A first rocker arm 16 is installed on the side of one set of torsion springs 15 away from the U-shaped frame 10. Another set of torsion springs 15 is mounted on the side away from the U-shaped frame 10 with a second rocker arm 17. A support shaft 18 is movably mounted on the top of the first rocker arm 16, and a rotating shaft 19 is movably mounted on the top of the second rocker arm 17. Both the support shaft 18 and the rotating shaft 19 extend through the U-shaped frame 10 to its outside. A first shaft 24 is movably mounted on the side wall of the U-shaped frame 10 above the torsion springs 15. A second shaft 25 is movably mounted on the side wall of the U-shaped frame 10 near the first shaft 24. Both the first shaft 24 and the second shaft 25 extend through the U-shaped frame 10 to its outside. The first clamping arm 20 The first connecting arm 22 is symmetrically arranged on the outside of the second clamping arm 21, and the second connecting arm 23 is symmetrically arranged on the outside of the second clamping arm 21. The second connecting arm 23 is movably connected to the second shaft 25, and the first shaft 24 is movably connected to the first connecting arm 22. The end of the second connecting arm 23 away from the second shaft 25 is movably mounted with the third shaft 26, and the side of the first connecting arm 22 away from the first shaft 24 is movably mounted with the fourth shaft 27. The second connecting arm 23 is movably connected to the second clamping arm 21 through the third shaft 26, and the first connecting arm 22 is movably connected to the first clamping arm 20 through the fourth shaft 27.

[0039] A first support arm 28 is movably installed on the side of the U-shaped frame 10 away from the torsion spring 15, and a second support arm 29 is movably installed on the side wall of the U-shaped frame 10 away from the first support arm 28.

[0040] The first support arm 28 is movably connected to the first clamping arm 20 via the support shaft 18, and the second support arm 29 is movably connected to the second clamping arm 21 via the rotating shaft 19.

[0041] When using the miniaturized fuse anti-accidental activation installation device, the first clamping arm 20 and the second clamping arm 21 are pulled in opposite directions. The first clamping arm 20 drives the first connecting arm 22 to rotate around the first shaft 24 via the fourth shaft 27. The second clamping arm 21 drives the second connecting arm 23 to rotate around the second shaft 25 via the third shaft 26. Simultaneously, the first clamping arm 20 drives the first rocker arm 16 and a set of torsion springs 15 to rotate via the support shaft 18. The second clamping arm 21 drives the second rocker arm 17 and another set of torsion springs 15 to rotate via the rotating shaft 19. Under the elastic support of the torsion springs 15 and the support of the U-shaped frame 10, one set of torsion springs 15 exerts a reverse thrust on the first rocker arm 16, and the other set of torsion springs 15 exerts a reverse thrust on the second rocker arm 17. The first support arm 28 and the second support arm 29 serve as auxiliary limiting supports, holding the fuse... The fuse body 14 is placed between the first clamping arm 20 and the second clamping arm 21, with its two ends in contact with two sets of lower elastic buckles 13. This allows the first clamping arm 20 and the second clamping arm 21 to be released. Under the elastic support of the torsion spring 15, the first clamping arm 20 and the second clamping arm 21 clamp and limit the fuse body 14. It is then connected to external electrical components through the lead wire plate 12. The top cover 2 is clipped onto the surface of the base 1. Under the elastic support of two sets of elastic C-shaped pieces 4, the two sets of upper elastic buckles 5 inside the top cover 2 contact the surface of the fuse body 14, limiting its position. This mitigates the risk of accidental activation to a certain extent, enabling the fuse anti-accidental activation installation device to conveniently limit and support the fuse, preventing the fuse from shifting position, and improving the convenience of limiting and supporting the fuse in the fuse anti-accidental activation installation device.

[0042] Telescopic columns 30 are movably installed inside the support frame 9. The telescopic columns 30 extend through the support frame 9 to its outside. A pull ring 33 is movably installed at one end of each telescopic column 30.

[0043] Each telescopic column 30 has a top block 32 installed at the other end. The top block 32 extends into the interior of the base 1 and is movably connected thereto. Each telescopic column 30 has a first spring 31 fitted on its surface. One end of each first spring 31 is connected to the support frame 9.

[0044] The other end of the first spring 31 is connected to the top block 32. The support column 6 extends into the interior of the base 1 through the circular groove 8. The surface of the support column 6 is provided with an annular groove 34, and the top block 32 cooperates with the annular groove 34.

[0045] When the fuse needs to be replaced, manually pull the four sets of pull rings 33 in sequence. With the support of the support frame 9, the pull rings 33 drive the telescopic column 30, the first spring 31, and the top block 32 to move outward, so that the top block 32 disengages from the annular groove 34, and the top cover 2 is removed. Release the pull rings 33, and with the elastic support of the first spring 31, the first spring 31 drives the top block 32 to reset, allowing the fuse inside the base 1 to be replaced. After replacement, the top cover 2 is locked onto the surface of the base 1. The four sets of support columns 6 cooperate with the top block 32 through the circular groove 8 to limit the movement of the fuse inside the base 1. This realizes the convenient replacement of fuses by the fuse anti-accidental contact installation device, reduces the risk of accidental contact, facilitates operation in confined spaces, and improves the convenience of replacing fuses in the fuse anti-accidental contact installation device.

[0046] The working principle of the technical solution provided by this utility model is as follows: When using the miniaturized fuse anti-accidental contact installation device, the first clamping arm 20 and the second clamping arm 21 are pulled in opposite directions. The first clamping arm 20 drives the first connecting arm 22 to rotate around the first shaft 24 via the fourth shaft 27. The second clamping arm 21 drives the second connecting arm 23 to rotate around the second shaft 25 via the third shaft 26. At the same time, the first clamping arm 20 drives the first rocker arm 16 and a set of torsion springs 15 to rotate via the support shaft 18. The second clamping arm 21 rotates via the rotating shaft 19. The second rocker arm 17 and another set of torsion springs 15 rotate. Under the elastic support of the torsion springs 15, one set of torsion springs 15 exerts a reverse thrust on the first rocker arm 16, and the other set of torsion springs 15 exerts a reverse thrust on the second rocker arm 17. The first support arm 28 and the second support arm 29 serve as auxiliary limiting supports. The fuse body 14 is placed between the first clamping arm 20 and the second clamping arm 21, with its two ends contacting the two sets of lower elastic buckles 13, thereby releasing the first clamping arm 20 and the second clamping arm 21. Under the elastic support of the torsion spring 15, the first clamping arm 20 and the second clamping arm 21 clamp and limit the fuse body 14. It connects to external electrical components via the lead plate 12. The top cover 2 is clipped onto the surface of the base 1. Under the elastic support of the two sets of elastic C-shaped plates 4, the two sets of upper elastic buckles 5 inside the top cover 2 contact the surface of the fuse body 14, limiting its position. When the fuse needs to be replaced, the four sets of pull rings 33 are manually pulled in sequence. Under the support of the support frame 9, the pull rings 33 drive the telescopic column 3. 0. The first spring 31 and the top block 32 move outward, causing the top block 32 to disengage from the annular groove 34. The top cover 2 is then removed, and the pull ring 33 is released. Under the elastic support of the first spring 31, the first spring 31 drives the top block 32 to reset, allowing the fuse inside the base 1 to be replaced. After replacement, the top cover 2 is secured to the surface of the base 1. The four sets of support columns 6 are positioned by cooperating with the top block 32 inside the base 1 through the circular groove 8, thus completing the use of the fuse anti-accidental contact installation device.

[0047] This utility model encompasses any substitutions, modifications, equivalent methods, and solutions made within the spirit and scope of this utility model. To provide the public with a thorough understanding of this utility model, specific details are described in detail in the following preferred embodiments; however, those skilled in the art will fully understand this utility model even without these detailed descriptions. Furthermore, to avoid unnecessary confusion regarding the essence of this utility model, well-known methods, processes, procedures, components, and circuits are not described in detail.

[0048] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A miniaturized fuse anti-accidental activation installation device, characterized in that: The device includes a base and a top cover. The top cover is provided on the outside of the base. Multiple sets of through holes with equal spacing are provided on the surfaces of the base and the top cover. Elastic C-shaped pieces are symmetrically installed inside the top cover. Each elastic C-shaped piece has an upper elastic buckle at its bottom end. Four sets of support columns are installed at the bottom end of the top cover. A support plate is installed inside the base. Four sets of circular grooves are provided at the top of the base. Four sets of support frames are installed on the side walls of the base. A U-shaped frame is installed at the top of the support plate. Connecting plates are symmetrically installed on the top side walls of the support plate. Wire plates are installed on the side walls of the connecting plates. Each wire plate has a lower elastic buckle at its top end. A first clamping arm is provided outside the U-shaped frame. A second clamping arm is provided outside the first clamping arm. A fuse body is placed between the first and second clamping arms. Torsion springs are symmetrically installed on the side walls of the U-shaped frame. A first rocker arm is installed on the side of one set of torsion springs away from the U-shaped frame, and a second rocker arm is installed on the side of the other set of torsion springs away from the U-shaped frame.

2. The miniaturized fuse anti-accidental contact installation device according to claim 1, characterized in that: A support shaft is movably mounted on the top of the first rocker arm, and a rotating shaft is movably mounted on the top of the second rocker arm. Both the support shaft and the rotating shaft extend through the U-shaped frame to its outside. A first shaft is movably mounted on the side wall of the U-shaped frame above the torsion spring. A second shaft is movably mounted on the side wall of the U-shaped frame near the first shaft. Both the first shaft and the second shaft extend through the U-shaped frame to its outside. A first connecting arm is symmetrically arranged on the outside of the first clamping arm.

3. The miniaturized fuse anti-accidental contact installation device according to claim 2, characterized in that: The second clamping arm is symmetrically provided with second connecting arms on its outside. The second connecting arms are all movably connected to the second shaft. The first shaft is movably connected to the first connecting arm. A third shaft is movably installed on the end of the second connecting arm away from the second shaft. A fourth shaft is movably installed on the side of the first connecting arm away from the first shaft. The second connecting arm is movably connected to the second clamping arm through the third shaft. The first connecting arm is movably connected to the first clamping arm through the fourth shaft.

4. The miniaturized fuse anti-accidental contact installation device according to claim 3, characterized in that: A first support arm is movably installed on the side of the U-shaped frame away from the torsion spring, and a second support arm is movably installed on the side wall of the U-shaped frame away from the first support arm.

5. The miniaturized fuse anti-accidental contact installation device according to claim 4, characterized in that: The first support arm is movably connected to the first clamping arm via a support shaft, and the second support arm is movably connected to the second clamping arm via a rotating shaft.

6. The miniaturized fuse anti-accidental contact installation device according to claim 5, characterized in that: The support frame is equipped with telescopic columns inside, which extend through the support frame to the outside. Each telescopic column has a pull ring installed at one end.

7. The miniaturized fuse anti-accidental contact installation device according to claim 6, characterized in that: Each telescopic column has a top block installed at its other end, and the top block extends into the interior of the base and is movably connected to it.

8. The miniaturized fuse anti-accidental contact installation device according to claim 7, characterized in that: Each telescopic column is fitted with a first spring, and one end of each first spring is connected to a support frame.

9. The miniaturized fuse anti-accidental contact installation device according to claim 8, characterized in that: The other end of each of the first springs is connected to the top block, and each of the support columns extends into the interior of the base through a circular groove.

10. The miniaturized fuse anti-accidental contact installation device according to claim 9, characterized in that: The surface of each support column is provided with an annular groove, and each top block is engaged with the annular groove.

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